-8.64% is the change from 521 to 476
Calculation steps:
[( 476 - 521 ) ÷ 521] x 100 = -8.64%
Formula
Percentage change = [(476 - 521) / 521] x 100
Subtract the new number by the original number
476 - 521 = -45
-45 ÷ 521 = -0.08637236084452975
-0.08637236084452975 x 100 = -8.64%